coffee ring

noun

a coffeecake shaped like a ring, plain or fruited, often with a topping of raisins, ground nuts, and icing.

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Word History and Origins

First recorded in 1920–25

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Example Sentences

Invented by a BASF scientist in 1916, the chemical reduces surface tension between two substances, enabling grime to come off of countertops and coffee rings to disappear from mugs.

From ProPublica

coffeepot coffee royal

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